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Subject: Re: TB's Basic Question

Author: Len Eisner

Date: 19:04:19 01/22/00

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On January 22, 2000 at 20:23:42, Robert Hyatt wrote:

>On January 22, 2000 at 20:19:19, Robert Hyatt wrote:
>
>
>There is another way to handle this that might be better against
>humans:
>
>Do a minimax search to some depth, but probe the tablebases at each ply.
>Make the static eval return something like N-sum(opponent's non-losing
>moves).  The idea is that you would like to follow branches where the
>opponent has only one non-losing move at several points, hoping for one
>blunder to lose the game for him.
>
>I had code written for this, but never really finished testing it as the
>current approach is simpler...

I like it . . .

In playing through 5-piece endings in GM games, I noticed that even GM’s don’t
always find the single move that draws in those endings where only one move
holds the game.  It is incredibly difficult to find those moves without a
tablebase.

Len



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